“It is well known to all that, since 1550, avowed heretics and others whose catholicity is not to be trusted, have brought secretly into the land pernicious and dangerous books, through the influence of which the heretics are confirmed in their errors and the faithful are led astray. It is the purpose of the present work to secure the destruction of the existing copies of this baneful literature and to protect the land against the introduction of further similar books. _Le Catalogue des livres reprouvéz et des livres que l’on pourra lire aux enfans és escholles particulières, selon le jugement de l’université de Louvain. Imprimé par ordonnance de la Majesté Royale. Á Louvain. Par Martin Verhassett. Imprimeur juré. L’an de grace MDLVIII. Avec Grace et Privilège du Roy._ (Then follows a second title-page in Flemish.) The lists contain, with some corrections, the titles printed in 1550. The additions (distributed alphabetically) comprise about one hundred titles. The bibliography is much more correct, in the matter of names, book-titles, freedom from duplicate entries, and consistency of arrangement, than that of the Italian lists of the same period. Among the new names in Class I (authors all of whose works are condemned) are those of Jo. Athanisius Veluanus, Jo. Sleidanus, and Memno Symonis. The first should read: Jo. Anastasius (Jan Geeraerds ter Stege), Veluanus (Pastor in Veluve). There are twelve additional titles in the list of anonymous works. The material of this Louvain Index was undoubtedly utilised by the compilers of the Index of Paul IV, but they managed to bring into their transcripts a number of errors that did not find place in the original. _14._ _1559._ _Valladolid._ _Valdes._--_Catalogus Librorum qui prohibentur mandato Illustrissimi et Reverend. D. D. Ferdinand de Valdes, Hispalen., Archiepi., Inquisitoris Generalis Hispaniae. Nec non et Supremi Sanctae ac Generalis Inquisitionis Senatus. Hoc Anno MDLIX editus. Quorum jussu et licentia Sebastianus Martinez, Excudebat Pinciae._ The industrious Inquisitor-General had already, as we have seen, brought into print two Indexes; for the first of these he had utilised the lists of the Louvain compilers, while the titles in the second were restricted to editions of the Scriptures.